i would like to use a Jeenode to make temperature acquisition and transmit to another jeenode connected to a computer. I have relays that are controlled on an arduino board with 5 Volts. I would like to use these relays, but i don't know if it will be possible. I have seen that jeenode need 3.3 Volts, but i can't find informations for the Jeenode V5. If Jeenode V5 needs only 3.3V, what will be the tension of digital outputs ? Will i be able to control the relays with 3.3V, or do i have to buy relays that can be controlled with 3.3V ? I have the same questions for an NTC which works on 5V. Would it work with 3.3V ?